Average
#156 of 219 schools in DE
Millsboro Middle School
Middle School · Indian River School District · Millsboro, DE
An Indian River School District middle school where students score 3 points below what's typical for similar communities.
302 East State Street, Millsboro, DE 19966
- Math 26% vs DE 31% (2025)
- Reading 34% vs DE 42% (2025)
- 14.3:1 student-teacher ratio
Academics
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Students at Millsboro Middle School score 30% proficient, which is below what's typical for similar communities (expected: 33%).
2025 DESSA proficiency
Most recent published year. School vs. DE average.
Trend
→ SteadyProficiency is down 55 points across the 17-year record (2009–2025) and has held near 30% recently.
Show all 17 years
Multi-year averages used by the rating model: math 37% (multi-year average, 2009-2025) · reading/ELA 53% (multi-year average, 2009-2025)
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Based on 90 test records from DE state assessments and EdFacts (NCES).
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateThe neighborhood
Where Millsboro Middle School sits, and what the surrounding area looks like.
Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries.
Getting around & local context
- Walk 47Car-Dependent
- Bike 45Somewhat Bikeable
- City Safety: High2,778/100K
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FBI Uniform Crime Reporting · 2024 · city context (Millsboro), not school-level safety or attendance eligibility. Source details
Source period: 2024. Freshness not available.
Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$75,436
Median home value
$282,100
Median rent
$1,293/mo
College educated
27.6%
Homeownership
82.5%
Poverty rate
12%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 19966; this is area context, not an attendance boundary.
Compare nearby
Nearby same-level schools
3 from a 5-mile search; district fallback available
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Ennis (howard T.) SchoolEnrollment path unverified | 4.0 | PK–12 | 3.4 mi | 316 | Compare → |
| Georgetown Middle SchoolEnrollment path unverified | 6.8 | 6–8 | Not available | 886 | Compare → |
| Selbyville Middle SchoolEnrollment path unverified | 7.7 | 6–8 | Not available | 749 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Indian River School District
- Schools in district
- 16
- Rank in district
- #11 of 15
- District spending per student
- $19,367NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 14.9%Census SAIPE · 2024
Millsboro Middle School is listed in Indian River School District; a district label does not verify attendance for an address.
About Millsboro Middle School
Millsboro Middle School is a public middle school in Millsboro, DE, part of Indian River School District, serving approximately 756 students in grades 6th-8th with a 14.3:1 student-teacher ratio. It holds a MySchoolScout rating of 5.5 out of 10 and ranks #156 of 219 schools in DE. State assessment records show 37% math proficiency (multi-year average, 2009-2025) and 53% reading/ELA proficiency (multi-year average, 2009-2025).
Frequently asked questions
Common questions about Millsboro Middle School
What grades does Millsboro Middle School serve?
Millsboro Middle School serves students in grades 6th through 8th.
How many students attend Millsboro Middle School?
Millsboro Middle School has an enrollment of approximately 756 students.
What is the student-teacher ratio at Millsboro Middle School?
The student-teacher ratio at Millsboro Middle School is 14.3:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Millsboro Middle School rank in DE?
Millsboro Middle School ranks #156 of 219 schools in DE.
What is Millsboro Middle School's MySchoolScout rating?
Millsboro Middle School has a current MySchoolScout rating of 5.5 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Millsboro Middle School?
Based on loaded state assessment records, Millsboro Middle School has 37% math proficiency (multi-year average, 2009-2025) and 53% reading/ELA proficiency (multi-year average, 2009-2025).
Is Millsboro Middle School a charter school?
No, Millsboro Middle School is not a charter school. It is a traditional public school operated by the local school district.
Is Millsboro Middle School a Title I school?
No, Millsboro Middle School is not currently a Title I school.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- 6th – 8th
- Enrollment
- 756
- Student-Teacher Ratio
- 14.3:1
- Teachers (FTE)
- 53
- Type
- regular
- Setting
- Distant Town
- County
- Sussex County
- Chronic Absenteeism (SY 2022-23)
- 33.1%
- Phone
- (302) 934-3200
- Area population (ZIP 19966)
- 34,892
- Area average commute
- 29 min
- Area median age
- 53
Official sources & links
About this school's data
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2025 DESSA · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2025 DESSA. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2025 DESSA · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2025 DESSA. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- State assessments · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 19966; this does not measure the attendance area.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2025; directory SY 2023–24
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